}
+// This function is for drawing object handles without regard for zoom level;
+// we don't want our object handle size to depend on the zoom level!
+void Painter::DrawArrowHandle(Vector center, double angle)
+{
+ center = CartesianToQtCoords(center);
+ QPolygonF arrow;
+
+ // Since we're drawing directly on the screen, the Y is inverted. So we use
+ // the mirror of the angle.
+ double orthoAngle = -angle + (PI / 2.0);
+ Vector orthogonal = Vector(cos(orthoAngle), sin(orthoAngle));
+ Vector unit = Vector(cos(-angle), sin(-angle));
+
+ Point p0 = center + (unit * 6.0);
+ Point p1 = center + (unit * 21.0);
+ Point p1b = center + (unit * 11.0);
+ Point p2 = p1b + (orthogonal * 5.0);
+ Point p3 = p1b - (orthogonal * 5.0);
+
+ painter->drawLine(p0.x, p0.y, p1.x, p1.y);
+ arrow << QPointF(p1.x, p1.y) << QPointF(p2.x, p2.y) << QPointF(p3.x, p3.y);
+
+ painter->drawPolygon(arrow);
+}
+
+
void Painter::DrawLine(int x1, int y1, int x2, int y2)
{
if (!painter)